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Uncle Sam Mine, Cold Fork, Klamath Mts, Tehama Co., California, USA

Latitude: 40°9'41"N
Longitude: 122°42'44"W

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A Cu occurrence located in sec. 25, T27N, R8W, MDM, 3.5 km (2.2 miles) WSW of Cold Fork, along Freshwater Gulch. MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is hosted in limestone and greenstone. The ore body is a vein deposit at a thickness of 7.32 meters. Limestone forms the footwall and greenstone forms the hanging wall. Local rocks include Lower Cretaceous marine rocks.

NOTE: On the Redding geologic map, this deposit lies either in Lower Cretaceous marine strata, or in a fault sliver of older material.

Workings include underground openings with a length of 205.44 meters and comprised of 3 adits at 60, 300 and 114 feet in length, and with 200 feet of drifts.

Related tectonic structures: Klamath Mountains.

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References

O’Brien, J. C. (1946), Mines and mining in Tehama County, California: California Journal of Mines and Geology, California Division Mines (Report 42): 42(3): 189.

Eric, J.C. (1948), Copper in California: California Division of Mines Bulletin 144: 348.

USGS crib list for California (1981).

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10034217 & 10190120.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0061030043.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 18th Nov 2012 16:51:04